Com 00003 dialogs

[AnelCC]

03 Dialogs

A dialog is a small window that prompts the user to make a decision or enter additional information. A dialog does not fill the screen and is normally used for modal events that require users to take an action before they can proceed.

• Interumptive - stop current program flow
• Require the user to take action
• Maintain the user's current context

1. Created simple dialog

Create instance in the activity

val simpleDialog = SimpleDialogFragment()
        simpleDialog.setCancelable(false);
        simpleDialog.show(supportFragmentManager, "SimpleDialogFragment")

Create DialogFragment

class SimpleDialogFragment : DialogFragment() {
    ....
    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        val builder = AlertDialog.Builder(activity!!)
         ...
        return builder.create()
    }

Created interface to listener events

interface SimpleDialogListener {
    fun onPositiveResult(dlg: DialogFragment)
    fun onNegativeResult(dlg: DialogFragment)
    fun onNeutralResult(dlg: DialogFragment)
}

Implement interface SimpleDialogListener

 override fun onAttach(context: Context) {
        ...
            simpleDialogListener = context as SimpleDialogListener
        ...
    }

2. Created DatePickerDialog

val cal = Calendar.getInstance()
val datePicker = DatePickerDialog(this,
    DatePickerDialog.OnDateSetListener { view, year, monthOfYear, dayOfMonth ->
        Log.i(TAG, String.format("Date Chosen -- day: %d, month: %d, year: %d", dayOfMonth, monthOfYear, year)) },
    cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH))
datePicker.setTitle("Choose a Date")
datePicker.show()

3. Created SingleChoiceDialogFragment

class SingleChoiceDialogFragment : DialogFragment() {
    ...
    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        val builder = AlertDialog.Builder(activity)
        ...
        return builder.create()
    }
}

val complexDialog = SingleChoiceDialogFragment() complexDialog.show(supportFragmentManager, "SingleChoiceDialogFragment")

###4. Created Custom Dialog Fragment

val customDialog = CustomDialogFragment()
customDialog.show(supportFragmentManager, "CustomDialogFragment")

class CustomDialogFragment : DialogFragment() {
    private val TAG = "CustomDialogFragment"

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        val builder = AlertDialog.Builder(activity!!)

        // Create the custom layout using the LayoutInflater class
        val inflater = activity!!.layoutInflater
        val v = inflater.inflate(R.layout.custom_dialog_layout, null)

        // Build the dialog
        builder.setTitle("Please enter your info")
            .setPositiveButton("OK") { dialog, which -> Log.i(TAG, "OK Clicked") }
            .setNegativeButton("Cancel") { dialog, which -> Log.i(TAG, "Cancel clicked") }
            .setView(v)

        return builder.create()
    }
}